Optical structure



FIG. 1 is a top perspective view of an exemplary optical structure according to the present disclosure;

FIG. 2 is a bottom perspective view of the optical structure of FIG. 1;

FIG. 3 is a top view of the optical structure of FIG. 1;

FIG. 4 is a bottom view of the optical structure of FIG. 1;

FIG. 5 is a first side view of the optical structure of FIG. 1; and,

FIG. 6 is a second side view of the optical structure of FIG. 1 and rotated 90° from FIG. 5.

The broken lines represent portions of the structure that form no part of the claim. 

CLAIM The ornamental design for an optical structure, as shown and described. 